Know How - Injection Molding

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Published: 5/31/2017

How to Mount an Injection Mold
Five industry pros with more than 200 years of combined molding experience provide step-by-step best practices on mounting a mold in a horizontal injection molding machine.

Published: 2/27/2017

15 Things to Know About Servo-Driven Injection Machines
Drive technology for injection molding machines has been continuously evolving, and servo motors have become widely used in a variety of roles. Here’s what molders need to know about today’s servo drives in terms of cost, performance, maintenance, a...

Published: 4/1/2009

How to Solve Uneven Clamping
Of the hundreds of variables involved in injection molding, clamping mechanisms and platens often get less attention than they deserve.

Published: 7/1/2008

Find the Source of Visual Defects
The appearance of visual defects on parts such as cracking, crazing, grooves, ripples, wave marks, and flaky brittleness often indicates more than an aesthetic problem.

Published: 4/1/2008

What to Do About Weak Weld Lines
Weld or knit lines are perhaps the most common and difficult injection molding defect to eliminate.

Published: 3/1/2007

Sticking Sprues or Parts? Lots of Possible Causes and Solutions
Material sticking in the mold can be a production killer, whether it is the sprue or the formed part in the cavity.

Published: 7/1/2005

Eliminate Surface Defects on Molded Parts
Visible defects on the surface of a molded part appear as dull, glossy, or hazy areas, or as a rippled surface, called orange peel.

Published: 7/1/2004

How to Stop Flash
Flashing of a part can occur for several reasons—from variations in the process or material to tooling trouble.

Published: 3/1/1999

What You Can Learn from Shot Profiles
Want to know more about your molding process? Need a better way to diagnose problems? There's no better tool than the electronic 'signature' provided by process-monitoring curves of cavity pressure and other variables. Here's a sampling of seven rea...